| Literature DB >> 20889258 |
Xin-jiang Hu1, Jing-song Wang, Yun-guo Liu, Xin Li, Guang-ming Zeng, Zheng-lei Bao, Xiao-xia Zeng, An-wei Chen, Fei Long.
Abstract
The adsorption of chromium (VI) ions from aqueous solution by ethylenediamine-modified cross-linked magnetic chitosan resin (EMCMCR) was studied in a batch adsorption system. Chromium (VI) removal is pH dependent and the optimum adsorption was observed at pH 2.0. The adsorption rate was extremely fast and the equilibrium was established within 6-10min. The adsorption data could be well interpreted by the Langmuir and Temkin model. The maximum adsorption capacities obtained from the Langmuir model are 51.813mgg(-1), 48.780mgg(-1) and 45.872mgg(-1) at 293, 303 and 313K, respectively. The adsorption process could be described by pseudo-second-order kinetic model. The intraparticle diffusion study revealed that film diffusion might be involved in the present case. Thermodynamic parameters revealed the feasibility, spontaneity and exothermic nature of adsorption. The sorbents were successfully regenerated using 0.1N NaOH solutions.Entities:
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Year: 2010 PMID： 20889258 DOI： 10.1016/j.jhazmat.2010.09.034
Source DB: PubMed Journal: J Hazard Mater ISSN： 0304-3894 Impact factor: 10.588